US2509667A

US2509667A - Switch for alarm systems

Info

Publication number: US2509667A
Application number: US30268A
Authority: US
Inventors: Lee R Ballinger
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-06-01
Filing date: 1948-06-01
Publication date: 1950-05-30
Anticipated expiration: 1967-05-30

Description

`.sive switch for controlling of an alarm system. Y t

in object of the inention is to provide avsilnple,

mailPaaseieren sa 2,509,567 l 1 ssi/'iron Foa lenaairsrs'rnrrs t i (Lee It. Sellingen Cincinnati, 'lhiof` ",f Y l l .Jfap'pncisioe .irme r, 1ers, semina. 30,268

This invention relates to saitches and more" particularly `to ja vibration `actuated or respon f i claim. (ci. '2cm-sejvin aligned, vertically spaced relationship, one `end l of each member being icedvrelative tolower Wall Y the electrical circuit` 'Y positive acting switch `for controlling the elec-oy 4provide housing for intermittently and periodically ccml Y V391612111@ an electrical circuit to rnehom ami/0r I lights of avehicle. v i

Still another object of the invention is to provide'such aswitch wherein each of the contact elements Vare secured to resilientmembers, thereby increasing the sensitivity `and overall eciency Y of 'the device.

A furtnerobiect of che intention is e@ provide fa switch having means associated therewith to preclude the accidental ornnntentional operation of 'the switch during those periods o time l "when the motor vehicle to which it is attached is .under the control of an anthorizedcperator. l

`Still a further objectof the invention is to yprovide a switch having the hereinabove described characteristicswhicb also includes means for completing an electric circuit to `an alarm overturn.

I Another object ofthe-invention is to provide Y a Vswitch device adapted to be manufactured using modern massproduction methods.

These and otherv objects are attained by the l tric circuitof an alarm system, and particularly for alarm systems of the type associated with automotive vehicles and the like.

`Another object of` the invention is to aswitclilresponsive to vibrations imparted to its an operator to vary "the angular relatceishipv With particular reference nowV to' resilient member 2c, it willibe observedk thatit is secured i or anchored at its left end to leg x, of a U-shaped l member which also includes legs 25 and Z8,.and wherein leg E5 is disposed at substantial right Y,

angles with base member l. A bolt 38 may extend thru suitable `apertures provided in. end

Wall it and leg 25 for the purpose oi enabling` understood that the force of spring` 13/ will be jarring or to `vibration imparte@ to housing le. f `The inner end oflesilient member 22 may be means described'herein and as shown in the ac- `corrnzianif'ing drawings, in which; Y

,- *Fia l isa side View of. a switch embodying the teachings lof `the present invention Witlrthe top removed and with theside Wall partly broken away for clarity of detail and understanding. Fig. 2 .isa vertical elevation yofV the device of Fig. 3 is. adiaerammatical view 'ing an electric circuit to a horn and light.

With reference now to Fig. l, `the numeral `Hl l' `.indicates la housing kwhich may be fabricated from anv suitable vmaterial to( include side wells l2,- vend Walls 4-, a. bottom wall i6 and mount- Vinglilos or nanges I8.` y

`22,\ of springe-f.

fixed relative to base E by any suitable means.

Resilient `member .2li may beinsulated from leg` f l v 2t by means of insulating members 't2` ended. `A vcontact strip whicn projects ontwardlythru an'apertureet in side wall l2 is disposed, in cr-A cui -conipleting relationship with the inner or fixed endof. resilient member 2U. Y

`The outer or free end of resilient member which is adaptedy to voscillate in response to a secured relative to base i5 by means `of abolt 6G which is adapted to exert a compressive-force on a pair 'o laterally spaced insulating elementsl vEil and. di between which the inner end of memouter or free end of member 2 may be provided `with a contact element Et. Y v. 4 From the foregoingit is apparent that when upper resilientmember it is caused to oscllate A the, lower face `of weighted contact element 50 will be disposed in periodic contact with Contact element 68 carried by the free outer end of j lower member 22, thereby intermittently completing anV electrical circuit series contact strips and E6.

` In order to preclude operation of the switchv during those periods of time when it is desired toA render ineffective theY alarm system which it j controls, Ifhave provided means fcc engagingl v lifting the outer' free end of upper member It will bev v 2o l is provided Vwitl'laweighted contact element 5G connected with y l accidental callyk .engage contactelement lfill.

Contact elements 58 i iullyv'raised or inoperative position illustrated in 20 to aV supported, non oscillatable position for f precluding accidental or unintentional completments Eiland 6E. Y

, y .As-disclosed in Figs. l and '2, this means mayA x "comprise a substantially U-shaped member having side legs 'Ill and a central leg 'f2'.` A lengthof rubber or other suitable insulating material "ifi, may beV disposed on central legl2, as illustratecr Theopposite ends of sidelegs 'f mayV be outtulfncd as atllli and 'IB for providing a pivotal connection with apertures B5 providedy 'thru side walls 2.- Tile end l may be extended toprovide a handle portion 82 disposed on the .outside of tlie housing for enabling anl operator `to shift the member from its interfering relationshipwith, uppermember 2li, as disclosed in the t solidlines of'liigsfl and to the inoperative position indicated bythe broken lines ,of Fig. l.' i In the preferred embodiment of the invention,

engages and lifts the outer end. of resilient niember 2G to the non-operative position illustrated.

In thisinamier likelihood oi an unintentional or disengagement l of the member from its interfering and' supporting reflationsliip.Y with -niem'oer 2G is eilectiveiy precluded. v

`With reference again to Fig. l, it will beob- A' served that when the end oi' member 2li has been positioned in its raised, moperative position, there is` a considerable or substantial spacing between the adjacent faces of contact elements SilV and EE. When the interfering member liasfbeen swung toY theinoperativepositionv disclosed in the dotted lines of Fig.` l,.`element 5c will be lowered to the vibration responsive position indii cated byftlie numeral itil, wherein the lateral spacing between the adjacent faces of Contact elements 5t and E8 is' quitenarrow. kWhen thus positioned, `anytsliglit jar or vibration of the lhousing will cause upper resilient lmember El? to4 oscillate whereby contactv element 5o willperiocen Since lower member 2?. is resilient, it will be deflected down- Wardlyto the position indicated by the numeral 2te as weighted contact element moves downward. to the lower limit of its downwardtravel, that is, to tlieposition indicated by tlie nu-Y meral "El Deiiection of lower member 22 will resultiz the application of an upward counter force to V.the end oi upper member Zcwhereby` the'upper limit of its travel will exceedv what it would otherwisehavebeen vkere Contact element 68 not yieldablsr and resilient-ly mounted,

y In this mannertlie period. or duration of oscillation of member 2E is considerably greater than` 60 v v It will be noted that adjustment of bolt-3E? it would be if member 2 2 were non-resilient.

'will change the; effective vibration-responsive spacing between contact elements 59 and 68 i thereby enabling the operator to` quickly and 1" keasily increase or .decrease the overall sensitivity l of the device, .The closer the spacing between 1 `and v68, the more sensitive the device will be." t

Vli third Contact element Ille may be provided in vertical spaced relationship with and above vthe 4 "highest position which upper lmember 2li will assume' incidentto its oscillations for closing a interi ering v ingoi an electrical circuit throughrcontactele- K f situarse??` p 1 f Fig. l. Contact memberA wil maybe secured to and carried by horizontal leg H22 of an' L-shaped baclietrnember having a dependingleg l Elfi which may be fastened or secured by means of a rivet, or

the likeJ to aside wall. A conductor 88 interconnectscontact element {Ul} with contact strip From the foregoing. it be noted that con- 1 s tact Hill willgbc engagedby thelupper face of the outer-*end of upper'resilient member il dur` Vingt'nose periods of' timewhen housingv le is in tcrted, andy during which periods of time an call the attention to turnedehicle;

` "the relationship of apertures S with reference to tiicinner edge of lweighted contact element tis suchV that the interfering member will be movedY Y past or `beyond dead'center (see Fig. l) when it electric circuit to the alarm system udllbe cona f tinuously closed until vthe housing is again righi-ed.V This feature has particular utility as anV automatic, foolproof alarm `which will eiieotit'ely f i v the presence of an over-` The relationship of system is `diagrammiatically disclosed in Fig. 3

'wherein the numeraliliil `indicates a battery, one of which is grounded es at the other side of which is connected by conductor M to contact stripct of my device. Contact strip Q5 may be connectedto one side of a horn 46 and l lamp M3 by mea-ns of conductors 52 and E54, as

" illustrated.4 It 'will be observed that an electrical `circuit will be completed to the horn and lamp" 4 whenever contact is completed betweencontact element 5G and contact S8 or 52 i being underiood thattiie circuit will be intermittently closed whengcontact elements 5d and E8 are engaged, whereas thecircuit will be continuously closed. 3' when contact elements 50 and itil are in engage# ment.

Various changes in the structural details of the device maybe made withinvthe scopeof the appended claim such as, by way of' example, ,t varying'the relative lengths of resilient vstrips 2S and 22, and the like, without departing from the l spirit of the invention.` f t What is claimed is:

A device for controlling the electrical circuit of an alarm system comprising a housing, a pair circuit thru contact element 58,1and above its of aligned horizontally" extendingV 'vertically spaced resilient members `each'leaving an end fixed relative to said housing. a weighted contact elem-ent secured to and carried by the free outer end of the upper member constructed and arranged for intermittentcontact withtlie end adjacent portionoi said lower member in vcident tovibration of said housing, and a Contact' l element disposed above and in vertically spaced g reiationshipwith the cuter end ci said upper member; said contact element engageablc oy said upper member when said focusing is turned upside down, for completing an electrical circuit series ,connected with said ast mentioned Contact element and vsaid upper niemeer.

'i LEE R. BALLENGER.

1' `necesanoes V'The i'olloe'ingy references are of' record; in the j file of this patent: l A K Unirse esTENfre Number Name n l Date f 1,729,800 vScott .v-..r Oct. 1, 1929, 1,779,926 scott; --1 oen. 2s, 1939 @2,161,429 De Felice '.-Q... DEC. 7L 1937 i 'i 2,344,854 j i YDempsey i Mar. 21, 1,944 Y" j f y n FoRmGN BATENTS. f Number i Country ate lny device with an alarm v